Calcium oxalate crystal types in three oak species (Quercus L.) in Turkey

Authors : Bedri SERDAR, Hatice DEMİRAY

Pages : 386-393

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Publication Date : 2012-12-01

Article Type : Research Paper

Abstract :Crystal types from 3 oak species representing 3 different sections of the genus Quercus were identified. Crystals were studied with scanning electron microscopy after localisation by light microscopy. The crystals were composed of calcium oxalate silicates as whewellite insert ignore into journalissuearticles values(calcium oxalate monohydrate); composites. In Quercus macranthera Fisch. et Mey. subsp. syspirensis insert ignore into journalissuearticles values(C.Koch); Menitsky insert ignore into journalissuearticles values(İspir oak); from the white oaks insert ignore into journalissuearticles values(section Quercus: Leucobalanus);, whewellite and trihydrated weddellites coexisted. Axial parenchyma cells included 30 crystal chains with walls as chambers in uniseriate ray cells; some cells had many crystals without any chambers and were small. Long thin crystals were found adherent to the membrane in the tracheary cell lumens of latewood. Quercus cerris L. var. cerris insert ignore into journalissuearticles values(hairy oak/Turkey oak); from the red oak group insert ignore into journalissuearticles values(section Cerris Loudon); is extremely rich in rhomboidal crystals. In species Quercus aucheri Jaub. et Spach insert ignore into journalissuearticles values(grey pırnal); from the evergreen oak group insert ignore into journalissuearticles values(section Ilex Loudon); rhomboidal crystals were found in axial parenchyma and multiseriate ray cells. Lignified wall layers were not observed around the crystals with chambers.
Keywords : Key words Calcium oxalate silicate, crystals, crystal morphology, Quercus, Turkey